ST2189 Datasheet | STMicroelectronics

8-bit dual supply level translator without direction control pin Features - - - - - 46 MHz: 92 Mbps data transfer when VCCA = 3.6 V Bidirectional level translation without direction control pin Wide voltage range of 1.65 V to 3.6 V for both VCCA and VCCB Configurable voltage translation: - VCCA can be ≥ VCCB or VCCA can be ≤VCCB Partial power down support - when VCCB is grounded, all the outputs will automatically go to high impedance. Low quiescent current (5 µA) ESD performance: - ±4 k V HBM (human body model) QFN20 (1.8 x 3.2 mm) - - Description The ST2189 is an 8-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally applied voltages, VCCB and VCCA, set the logic levels on either side of the device. Its architecture allows bidirectional level translation without a control pin. The ST2189 accepts VCCA from 1.65 V to 3.6 V and VCCB from 1.65 V to 3.6 V, making it ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems. This device has a tristate output mode which can be used to disable all I/Os. In power down mode feature - when VCCB supply is grounded, all I/Os go to high impedance automatically, with very low quiescent current on VCCA supply. Applications - - - Low voltage system level translation Mobile phones Other mobile devices Table 1. Device summary Order code ST2189QTR Package QFN20 (3.2 x 1.8 mm) Packing Tape and reel .. August 2009 Doc ID 15918 Rev 1 1/21 .st. 21 Pin settings Pin settings Pin connection Figure 1. Pin connection (top through view) Pin description Table 2. Pin...